Newbie with no spark

Newbie Joined: 05 Oct 2006 Posts: 19

Hi All newbie here, i have been pointed in this direction as i hear there maybe some guys here that could offer some advice.

Have a tech question that i am hoping someone from here maybe able to help with.
We have a renault 5 GTT with a 1.8 16V transplant. The wiring on the original transplant turn out to be a complete and utter bodge.

Earlier this year the main loom insulation broke down at the front of the block, this created a short and shortly after resulted in an engine bay fire. Luckily the fire was extiguished before any major damage occured, but the loom was a right off.

A new loom has been put on the block and we have the engine cranking. this is where the problems begin. the car has no spark. Have tested the signal from the ECU to the Ignition Module and am getting 0.03Volts. coming out of the coil there is only around 10Volts i was expecting this to be in the 1000's? am i right.

Before the fire i'm sure there was a relay clicking inside the near side relay box when turning to 2nd stage on the ignition. This is no longer the case. Have we missed something. Also down by the nearside relay box there is a large round plug with a rubber grommet insulation, the pin formation on this plug would appear to be similar to a 4 pin relay plug, does anyone know what the plug is for?

I understand this is a long post but am slowly running short of ideas. Is there any auto-sparks on here that can lend us some advice? we are just outside of southend, if there is anyone with a good knowledge in the area willing to have a look, our currency is beer would be good to speak with you.

Many thanks in advance

Devs

Retroholic Joined: 23 Dec 2005 Posts: 3315

the relay you describe is for the aux water pump..

also some one else had the same probs with no spark in ''Project Clio 16v'' worth checking

Newbie Joined: 05 Oct 2006 Posts: 19

cheers mate

will check out the project clio thread now!

Retroholic Joined: 23 Dec 2005 Posts: 3315

where did you get it??

is it black??

shoulda got a orange one of ere Razz

Newbie Joined: 05 Oct 2006 Posts: 19

Its a Tungy mate

Conversion was done by Torsion Tuning, due to a few problems they have had of present we are struggling to get any after sales service from them at the mo. Plus would be more of an achievement to get it back on the road again ourselves.

As an indication of how good the transplant was (wiring) part of the loom was actually trapped under the front torsion bar/engine mount! all i an say is thank god we got the fire out as my work shop had my VW camper and a 65 beetle in ut at the time!

Retroholic Joined: 23 Dec 2005 Posts: 3315

any pics mate?? send some by email on bbracer@hotmail.co.uk and i will post them if you cant

well intrested in these conversions wana do it to a 9 or early 11 Smile

also speak to david3533 he's in east sussex and are resident r5-16v builder Wink

Newbie Joined: 05 Oct 2006 Posts: 19

Have pics on my pc at home

will get them uploaded this evening! The car is/was great fun when running. hopefully the engine probs can be rectified so the exterior can be sorted, has a few patches of laquer peel but is a very straight car.

Fingers crossed by the end of the winter will be a very presentable car!

Retroholic Joined: 23 Dec 2005 Posts: 3315

well welcome to retro mate i spect we will see abit of you about and dont give up on the old girl and get it round the shows next year as we met at French Car Show and Renault World Series this year Thumbs Up!

Newbie Joined: 05 Oct 2006 Posts: 19

thanks alot for the welcome mate

will makes sure the car gets out and about just as soon as we can get her running again!

hopefully she will be scoring some good times on the track next year

Forum Moderator Joined: 02 Mar 2004 Posts: 19978

2nd turn on the key will have the main ECU relay powered on then the fuel pump relay which will click in then the pump priimes then click out after a few seconds, it will then click back in aand stay on when the engiens cranking and running.

theres 3 relays, cooling fan, ECU and fuel pump relay. The round rubebr one is as bb said the aux water pump relay.

Should get battery voltage at the ignition modules power feed and yes about 30kV out the Ht side.

is the ECU getting 12V? Are the engine earths new and in good chape?

Newbie Joined: 05 Oct 2006 Posts: 19

hi mate the earth from the block to the body was looking pretty suss so that was replaces, getting little to know resistance now so am pretty confident it has good earths

Well we have discovered our first problem, cheers chris as on 2nd stage ignition there is no relays clicking in the engine bay! so gonna have to look from the ignition switch down that side of of the loom (bulk head back)

on second stage does anyone have anypointers which signals and power wires should have a signal on the multi block connecting car to engine looms! as I'm not to sure and wires i would imagine should be live are not!

Forum Moderator Joined: 02 Mar 2004 Posts: 19978

input from the car to the engine is the starter wire, fuel pump wire and the ignition switch wires which the starter solenoid feed is one of them. the rest are just for gauges etc.

The engine is pretty much self contained, it just needs power to crank it over and the power feed to soupply fuel to the engine. The ECU etc is powered via main feeds fromt ehbnattery

Newbie Joined: 05 Oct 2006 Posts: 19

oh really so the ECU has a permanent supply? any ideas on a colour to look out for on the ECU supply as that could be a start. I have a suspicion the ECU could have got FUBAR in the fire as there was alot of shorting! which could also be a major problem with not being able to diagnose this

anyone local with a valver willing to let me stick an ECU on there car and see if it working?

Forum Moderator Joined: 02 Mar 2004 Posts: 19978

what engine is in it? clio or 19? same goes for loom

Newbie Joined: 05 Oct 2006 Posts: 19

a 19 mate

we found this out the hard way when we got the new loom! after we were told it was a clio lump when it was purchased, wasn't until we bought a clio lump and thought hey hese aren't the same we realised a fundamental error!

Retroholic Joined: 23 Dec 2005 Posts: 3315

ECU's on ebay there dead cheap

Forum Moderator Joined: 02 Mar 2004 Posts: 19978

so 19 loom and 19 ECU?

the loom for the 19 will have a pos feed from the battery to the starter, this will also go to the loom round to the alternator. there is another pos powwer feed that goers from the battery down the cambelt side of the engine, theres a power plug which plugs in near the alternator, again big fat pos feed.

The same feed will also go to the relay, thick red and white wire

Newbie Joined: 05 Oct 2006 Posts: 19

BB cheers for that mate, if can prove this ECU is shagged then to the bay of fleas it will be for a replacement!

chris cheers for the advice mate, muchos appreciated, will go and run through some of these tonight and see what happening when on each wire.

also yeah loom and engine are both R19

fingers crossed we can get it running as the car is so much fun. will report back tomorrow with findings of tonights testing!

Level 10 User Joined: 04 Nov 2005 Posts: 575

good to see you found your way over here mate, plenty knowledge over here to get yourself sorted out.

Newbie Joined: 05 Oct 2006 Posts: 19

cheers for the welcome mate

Have already received some invaluable knowledge so hopefully will be back up and running again in no time

Newbie Joined: 05 Oct 2006 Posts: 19

right update time!

Have got the relays going, on turning 2nd stage ignition relay clicks giving power to the ECU, this is then in turn switching fuel pump relay for a second or so and then clicks off as expected.

still there is no spark, Have had a play about with the coil module. checked a couple of voltages on the plugs going into the coil. positive is give 11 volts and has a good earth, however there is a spade plug above the supply connections that comes from a black rectangular box that appears to be mounted to the body. i'm only getting 4 volts at this plug when i put it to earth! is this right?

is there also a way of checking the TDC sensor? as it goes via the ECU???